Issued Patents All Time
Showing 1–13 of 13 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7052597 | Tuning fuel composition for driving cycle conditions in spark ignition engines | Walter Weissman, John T. Farrell, Alan M. Schilowitz, Takanori Ueda, Kazuhiro Akihama | 2006-05-30 |
| 6206940 | Fuel formulations to extend the lean limit (law770) | Walter Weissman, Anthony M. Dean, Kazuhiro Akihama, Satoshi Iguchi, Shuichi Kubo | 2001-03-27 |
| 5674822 | Synthetic ester base stocks for low emission lubricants | Richard H. Schlosberg, Walter Weissman, Maciej Radosz, Gerald Dennis Dupre', Ralph D. Gray, Jr. +3 more | 1997-10-07 |
| 5356551 | Multifunctional viscosity index improver for lubricating oil compositions | David Yen-Lung Chung | 1994-10-18 |
| 5262075 | Multifunctional viscosity index improver exhibitng improved low temperature viscometric properties | David Yen-Lung Chung, Mark J. Struglinski | 1993-11-16 |
| 5252238 | Multifunctional viscosity index improver derived from amido-amine exhibiting improved low temperature viscometric properties | David Yen-Lung Chung, Antonio Gutierrez, Mark J. Struglinski, Robert D. Lundberg | 1993-10-12 |
| 5167848 | Grafted viscosity index improver | David Yen-Lung Chung, Mark J. Struglinski | 1992-12-01 |
| 5053151 | Multifunctional viscosity index improver derived from amido-amine exhibiting improved low temperature viscometric properties | David Yen-Lung Chung, Antonio Gutierrez, Mark J. Struglinski, Robert D. Lundberg | 1991-10-01 |
| 5035821 | End-capped multifunctional viscosity index improver | David Yen-Lung Chung | 1991-07-30 |
| 4900461 | Viscosity modifier polymers (E-98) | Gary Ver Strate, Ricardo Bloch, Mark J. Struglinski, Roger K. West | 1990-02-13 |
| 4804794 | Viscosity modifier polymers | Gary Ver Strate, Ricardo Bloch, Mark J. Struglinski, Roger K. West | 1989-02-14 |
| 4749505 | Olefin polymer viscosity index improver additive useful in oil compositions | David Yen-Lung Chung | 1988-06-07 |
| 4507515 | Lubricating oil compositions containing ethylene-alpha-olefin polymers of controlled sequence distribution and molecular heterogeneity | Ricardo Bloch, Gary Ver Strate, W. R. Song | 1985-03-26 |